Why did our house get picked to be the local Animal Shelter? Seriously, did one of our friends play a trick on us and put a "Drop Unwanted Pets Here" sign outside?

In the past year, we have had:

-> Two cats show up at our house. Not kittens, but people-friendly cats. Luckily, we found a home for them with one of my friends from work. He was real happy with me when one of the cats delivered three weeks later ;)